Rotary motor.



N0. 694,333. 4 l Pafnfd Feb.' 25. [9G21 B. 'V. .SZABO.

ROTARY MTB. (Appicmim:V fued Ju'ne 24, 1901.) (No Model.) 6 Sheets-She'et fl.

No. 6945333. Patented Feb. 25, i902.

' vB. V. SZABU.

ROTARY Moron.

4 Application led June 24, 1901.) (No Model.) @Sheets-*Sheet 2.

No. 694,333. Ptdnted Feb. 25, |902.'

.8. V'. SZABU.

ROTARY MOTOR.

(Application led Jvune 24; 1901.)

6 Sheets-Sheet 3.l

(Norludel.)

f w@ n .THE nomas Pneus cov. mooLn'NQ. vqAsH H0. $94,333. 6 Patentd Feb. 25, |902.

' B. V. SZAB RUTABY MOTOR.

(Applicnzon :Bled June 24, 1901.)

(No Model.)

6 Sheets-Sheet 4.

w/T/vEssEs.I

A TTOHNE X6' o.. wAsM no. 694,333. Patented Feb. 25, |902.

A l AB. V. SZABG. l BUTARY MUTUI?. mppumibn and .fue 2 4, 1901.) Y (lo Model.) 6 sheetssheet 6.

on line 6 6 of Fig. 3.

yUNITED STATES PATENT OFFICE.

BASIL V. SZAB', OF CHICAGO, ILLINOIS.

ROTARY Nl OTO R.

SPECIFICATION forming part of Letters Patent No. 694,333, dated. February 25, 1902.

Application tiled June 24, 1901. Serial No. 65,793. (No model.)

To au whom t may concern,.-

Beit known that I, BASIL V. SZAB, of Chicago, in the county of Cook and State of Illinois, have invented certain new and useful Improvements in Rotary Motors; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form apart of this speciiication.

This invention relates to improvements in rotary motors of the general class shown in my prior application for United States Letters Patent, Serial No. 49,833, filed March 5, 1901; and the invention consists in the matters hereinafter described, and more particularly pointed out in the appended claims.

The improvements constituting my invention are especially applicable for embodiment in a center-wheel or hub motor for a vehiclewheel or a .power-transmitting pulley and is herein shown as applied to a vehicle-wheel.v

In the drawings, Figure 1 is a side elevation of a vehicle-wheel provided with a motor embodying my improvements, said motor being shown in transverse section. Fig. 2 is a sectional view taken on line 2 2 of Fig. 1. Fig. 3 is a side elevation, partly in'section, of the shaft or central non-rotative part on whichthe rotative partsof the motor are mounted. Fig. 4 is a transverse section on line 4 4 of Fig. 3. Fig. 5 is a plan view of the parts shown in Figs. 3 and 4. Fig. 6 is a transverse section Fig. 7 is an inner face view of one of the heads of the rotative casing of the motor. Fig. 8 isa central vertical section thereof. Fig. 9 is a longitudinal vertical section of the valve-casing, taken on line 9 9 of Fig. 10. Fig. 10 is a longitudinal vertical section of said casing, taken online 10 10 of Fig. 9. Fig. 11 is an end view of the parts constituting one of the sliding plates or pistons, showing the same slightly separated. Fig. 12 is a face View of the same parts similarly separated. Fig. 13 is an'inner end view of said parts conslitutingfone of the pistons or sliding plates. Fig. 14 is an inneredge elevation of one of said parts. fFig. 15 is a face view of the piston orplate and its connected shoe. Fig. 16 isan edge elevation of the same paris. Fig. 17.is a detail section taken on a radial plane, showing one of the lateral extensions of the cylinder and the piston or plate I therein. Fig. 18 is a transverse section on line 18 18 of Fig. 17. Fig. 19 is a transverse section of the shoe connected with the inner end of the piston. Fig. 20 is an outer face view of the shoe, showing the parts slightly separated to illustrate the construction thereof. Fig. 2l is an end elevation of said shoe. Fig. 22 is aside elevation thereof. Fig. 23 is a side elevation of the reversing-valve body. Fig. 24 is an end view thereof. Fig. 25 is an axial section ofthe complete valve. Fig. 26 is a section taken on line 26 26 of Fig. 25. Fig. 27 is a side elevation of the complete valve. Fig. 28 is a side elevation of one of the packing-strips for the sliding plate or piston. Fig. 29 is a cross-section taken on line 29 29 of Fig. 28. Fig. 3 0 is an edge view of the spring which holds the strip shown in Figs. 28 and 29 against said plate or piston.

Asshown in said drawings, A indicates the exterior casing of the engine, which is rotatively mounted on a stationary shaft B,which when the motor is used as a hub-motor is adapted to be connected with and forms an extension of the stationary axle. Said shaft is provided inside the casing with an eccentric cylindric part B', constituting in this instance an abutment against which the steam acts'to rotate the casing A and hereinafter termed a cylinden If the casing be stationary and the shaft rotative, said eccentric part B/ will constitute the inner rotative member of the motor. Said casing is provided with two heads A A2, which latter have out- Wardly-extending cylindric flanges or hubs a a, which surround the concentric parts of the shaft at each end of the eccentric cylindric portion thereof and affords bearing-boxes by which the casing is carried on said shaft. Desirably roller-bearings are interposed between the said bearing-boxes and the shaft, said roller-bearing consisting of inner and outer cylindric steel sleeves o.2 b, stationary with the box and shaft, respectively, interposed `cylindric rollers a3, and rings a4 d5, which are located at the ends of the rollers and in which said rollers are journaled. Said' roller-bearings are confined between flanges o. (shown more clearly in Fig. 8) and end plates A3 A3 of the boxes. The shaft B passes through the plate at one side of the motor, but extends IOT) only to the other plate,as shown in Fig.2. Said shaftB is provided on either side of the eccentric cylinder thereof with radial disks or flanges B2 B2,the outer edges of whichhave steam-tight engagement with the cylindric wallof the casing and which constitute the side walls'of the interior chamber of the casing. In i order to prevent leakage of steam between said flanges and the heads A A2 of Vthe cylinder, packing-rings C are interposed between said flanges and head, as shown more clearly in Figs. 2, 7, and 8. Said rings occupy annular grooves or recesses in the inner faces of thel heads and are made oblique or inclined -on their peri pheries to engage the conical outer walls of said annular grooves or recesses. Each packing-ring is duplex, consisting o f two separate annular members which are so disposed with respect to each other that the meeting ends of one member is out of line with the meeting ends of the other member, as shown more clearly in Fig. 7. The pack-` stitute pistons. yIn case the casing of the.

motor be stationary and the shaft rotative, said, plates would constitute abutments. Said plates slide at their outer ends in transverse ways or guidevrecesses formed in radial ex-r l the side faces of the plates.

tensions of the motor-casing. Said extensions, as herein shown, consist of integral projecting parts A4 (shown in Figs. 1, 2, and '7) and hollow U-shaped castings A5, Figs. 1, 17, and 18, attached to said extensions A4-and provided with fiat side covers or heads A, which form the end walls of said guide-recesses for the slidn` ing plat-eser pistons and whichare iiush with the inner surfaces of the disks or flanges B2. In order to prevent the escape of steam past said plates into the guide-recesses, packing strips or blocks d are provided, Figs. 1, 18, 28, and 29Whioh occupy grooves in the inner walls of said guide-'recesses and bear against Said packingstrips are forced yieldingly against the plates by means of leaf-springs d, Figs. y18, 28, and 30, interposed between said strips and the walls of the recesses. Said sliding 'plates are provided at their inner ends with bearing-shoes E, Figs. 2,15, 16, 20,and 22. Said shoes have oscillatory connection with the inner edges of the plates in such manner as to permit the latter to turn or swing slightly on the plates to maintain the proper accurate relation between the shoes and the eccentric cylinder as the plates move or turn around said cylinder `with the shoes in contact therewith. The

cylindric wall of the casing is shown as provided with recesses a7 at the inner ends of the guide-openings for the pistons, Fig. 1, to receive the shoes when the pistons are in their outermost positions. The pivotal connection between the shoes E and plates D is shown as formed by means of longitudinal parti-cylindric heads D on the plates, which engage correspondingly-shaped longitudinal recesses, as e, in the shoes in the manner shown in Figs. 12, 13, 14, 16,' and 21. Said shoes and plates are connected with the stationary shaft in such manner as to insure the proper engagement of the shoes with the eccentric cylinder in all parts of the movement of the casing around the shaft, said connections being such as to positively move the plates in their Ways or guides as the part of the casing containing the same moves toward and away from the eccentric cylinder. The construction for effecting this result consists in this instance of annular grooves' b', Figs. l, 2, 3, 5, and 6, formed on the inner faces of the disks or flanges B2, concentric with the axis of the eccentric cylinder and preferably adjacent to the outer surface of the latter. Said grooves b are engaged by curved lugs e', Figs. 2, 15, 20, and 22, projecting outwardly from the ends of the 'shoes E. The plates are inserted in their guides or ways before the casing is mounted on the shaft, and in order to afford means for inserting the shoes in the chamber of the casing one of the ianges B2 is provided 95 with an opening covered by a removable part B4, as shown in Figs'. 3 and fi, said part consisting of a plate which is attached to the fiange B2 by means of screws or the like. When said plate is removed, it affords an opening of sufiicient size to permit the shoes to be horizon tally inserted into the casing when the casing is turned into the proper position therefor. When said shoes are to be inserted in the casing, the casing is first revolved to bring one of the plates D in line with the opening in the flange or disk B2, and the shoe is then inserted in the casing, the groove e thereof slipping over the parti-cylindric head at the inner end of the adjacent piston or plate. After oneof said shoes'has been inserted in place in the manner described the casing is revolved to bring the other plate in line with said opening, Vand the other shoeV is thereafter. inserted into place in the same manner. Obviously the operation of removing the shoes from the casing is the reverse of that just de scribed. The removable plate B4 has formed on its inner surface a part of the groove b, engaged by the lugs e of the shoes E, so that when said plate is removed abreak is formed in the groove, which permits the lugs e of the shoes to be inserted therein.

The eccentric cylinder does not come into contact withvtheinterior cylindric surface of the casing, and atight jointv is provided between these parts by means of a radially-movable packing-block F, which occupies a longitudinal groove or recess in the cylindric surface of the eccentric cylinder in the manner shown in Figs. 2, 3, and 6 and engages at its outer surface said interior surface of the casing. Said blockis capable vof sliding radially inwardly and outwardly in said IOO groove or recessand ts steam-tight against the inner cylindric Ysurface of vthe .casing.`

The block is supported in said recess by meansof studs or pins f, projecting outwardly from the ends of the block through radiallyarranged slots b2 inl the disks or flanges B2, Figs. 2, 3, and 4, and provided at their outer ends with rollers f', which travel invannular grooves A8 in the inner faces of the heads A` and A2 of the casing, as' more clearly shown in Figs. 2, 7, and 8. Said annular grooves A8 are so 'disposed with respect to the eccentric cylinder as to hold the bearing-block F projecting outwardly from the recess in the cylinder during almost the entire rotation of the cylinders, as shown in Figs. 3 and 6,

inasmuch, however, as the bearing member projects beyond the periphery of the cylinder,

it isnecessary in the revolution of the vcasing about said cylinder to draw the block into the recess twice during each revolution of the casing in order to permit the shoes E to t two parts, embracing 'a body portion F and a wearing-plate F2, joined by bolts F3, passing outwardly through said'body and having screw-threaded engagement with the-wearing-plate. Surrounding said bolts andinterposed between the wearing plate .and

fianges in the holes through which the b olts.-

pass are spiralys'prings f3, which act to press said plate outwardly and hold the same in close contact with the interior cylinder-snrface ofthe casing notwithstanding wearbetween vsaid parts.

The eccentriccylinder inlet and outlet Vports b3 b4, Figs. 1 and 6,

which open through the surface thereof at either side of the bearing-block F. Said ports'communicate with longitudinal passages b5 o, Figs.v4 2, 3,5, andi), extending. through the body of the cylinder and the shaft B toward one c nd of the latter At 'points outside theange a o n the rotating casing said passages are connected withradial openings o7 bs in the shaft, as shown i n full lines in Fig. 9 and in dotted lines in Fig.

5, which radial openings open into the cylindric surface of the shaft B.

G, Figs. l, 9, and 10, designates a casing non-rotatively secured to theshatt B around the part thereof in which the openings bT bs are located;` Said casing is provided with a cylindric sea-t'for a rotative valve (indicated as a whole by the letter l) andwith lateral passages g g', leading from theportsin the valveseats to the radialpassages blos in the shaft. Said'casing G is also provided with a cen- B is provided with trally-arranged Vexhaustpassage g2, leading from a port-opening-into the seat engaged by the valve l in saidcasingand conuectedvwith an exhaust pipe or passage la. The Acasing G is provided withl an inlet-passage g3, adapted to be connected with an inlet-pipe leading from any suitable source supplying the motive fluid, land-said passage communicates with .a :port which opens the valve-seat engaged by the valve l,

rI Ihe details of the valveare shown in Figs. .I

23 to 27, inclusive," andl are made as follows: Said valve consists of la cylindric bodyl, provided oneach side' of its centerA with parallel depressions or recesses l2 and `which extend in a direction transverse to the aXisrof the body. Said bodyis surrounded by a'split spring-ringi?, which is confined between a radial annularflange i at one end of thebody anda plate i', detachably-connected with the other end of the body and Voverlapping one margin of' said Vringl Said ring isprovided with four holesor openings ,which are located in valinernent with` the ends of 'recesses or depress ionsl2,' said recesses in theblock and holes in the ring constituting two throughports 1 4, as indicated in Fig. 27. The ring is held from turning on the body by means of a key lfastened to the ring, Figs. 25. and

. 26, which enters agroove i2, Fig..`2ft,1in .the @body disposed parallel with respect to the axis of said body.,. Means areprovided for compensating fo r thewearl on the erterior surface ofV the ring and valve-seat, whereby a steam-.tight joint ismaintained between the valve and itsseat, said vmeans beingconsltructedto expand thering upon wear thereof and holdthe samein firm contact with'the valve-seat. This construction is shown more clearly in Figs. .25 and 26 and consists ofQa radially-movable, block I6, which occupies a grooveor recess in the -periphery of the cy-- lindric body I( and parallel with the axis of saidV body.

said block is heid yieidingiy..

againstthe ring by means of springs 1 7 17., which occupy radialsockets lin the bodyand press outwardly against theinner surface of said movable block.` The valve is rotatively mounted inthe casing G by-meansofa stud i? thereon, Figs. 10, 23, and 25, which enters a socket in the side wall of the casing, and a stein t, which has screw-threadedengage-` ment with the side ofthe valve remote from the stud iand, as herein shown, is provided with"a hand-lever t5, bywhich the valve may be rotated. The stem 4 of theyalve passes .through a removable .plate 18, attached tothe cas ingwall by means of, scr ewstuds or.. the like, andthe removal of, Iwhich permits the insertion or removal of the valve. Said. plate is providedwith a central stuffing-box. 19, through which the stem passes vand whereby a steam-tight` joint is provided.

By an inspection of Fig. 9 with referencel IZO to Fig. l it `will be. observed thatwhen theA valveis turned intocthe positionshown in.

Fig. 9 live steam may pass through the leftthe engine.

'direction of the steam being indicated by the arrows. At this time the right-hand passage g of the casing and therefore the connected passages b2,b6,and b4 are out off from the steaminlet, but are in com mu nication with the exhaust-port through one of the ports I4 of the valve. Steam therefore enters the left-hand side of the cylinder until the shoe E covers the inlet-port b3, after which the steam acts eXpansively-until the upper shoe (shown in Fig. l) passes the port b4. During thisy time steam is being exhausted through the passage b4 and its connected passages. After the upper shoe.(shown in Fig. i) passes the' passage bithe steam atfthe left thereof begins to exhaust through the passage b4. If it be desired to reverse the engine, the valveI is rotated so as to bring the port, which is shown in Fig. 9 as connecting theinlet with thepassage g, in position for establishing communication between said passage g and the exhaust-passage and also to afford communication through the other port of the valve'between the inlet andv the passage g'. The steam-passages b3 IfL are provided with branch passages b2 blo, each of which open upon the face of the cylinder a distance from the open- .ing of itsl connected main passage greater than the. thicknessl of the bearing-shoes E. This construction prevents the shoes from entirely closing the steam-inlet passage, as might occur should the branch passages be omitted and one of the shoes stop directly over the inlet-passage. In the construction shown the shoe is not of sufcient width to cover the inlet-passage and its branch, where by if the shoe stops over the main steam-inlet passage steam would enter the casing behind the piston through the connected branch passage and rotate the casing.

-It will be obvious that by turning the valve a desired distance one way or thelother from the position shown in Fig. 9 the volume of steam admitted tothe engine, and therefore the speed of the engine, may be varied and j that by turning'the imperforatel part of the valve opposite to the inlet and exhaust passages the steam may be cut ed entirely from as a cut-off, regulating,vand reversing valve and is so constructed that a steam-tight joint between the valve and its seat is assured notwithstanding wear of said parts.

In order to maintain at all times a steamtight joint between the side edges of the plates D and the sides of the guide-passages and ilangesor disks B2, a construction is provided which is shown in detail in Figs. 1l to 18, the same being made as follows: Each of said plates is divided longitudinally into two sides or halves D2 D3, which are connected at their meeting edges by'means of a sliding and steam-tight connection consisting princi pally of a tongue Z4 on the part I)3 and a groove d' The vvalve I therefore serves' in the other part adapted to receive said tongue. Goiled springs d3 are inserted in recesses orsockets in the part D2, so as to act upon the other part to throw outwardly or separate 'the two parts of the plate, and thus hold their outer edges pressed against the inner faces of the side walls of the guides and the disks or the flanges B2. gage enlargements d4 on the part D2, which project slightly in advance of the tongue, as shown more clearly in Figs. 11, 12, and 14. The lateral sides of the principal parts of said enlargements are iush with the faces of the plates; but at the extreme ends of said enlargements rabbets d5 are formed on the side faces thereof, which permit said outer ends of theV enlargements to enter the recesses or sockets which contain the springs cl2. In this manner steam is prevented from escaping along the groove CZ, and said rabbets d5 are made of sufficient width to insure the same being maintained in Contact with the walls of the spring-sockets in the maximum expansion of the plate, thereby preventing steam escaping through the piston at these points. The shoe E, connected with each plate D, is also made longitudinally expansible, so that it then may be held in contact with the disks or flanges B2 in the same manner as the body of the plate. The construction for this purpose :is shown in Figs. 19 to 22, inclusive. As shown therein, said shoe is made of two parts E E2. The part E is provided between the longitudinal groove c and its contact-face with a recess or socket c2, as indicated in dotted lines in Fig. 22, and the part E2 is provided with a stud or projection es, which enters said socket. Spiral springs e4, one on each side of the projection c2, are placed in recesses in the partE2 and are adapted to bear against the bottom'walls of corresponding recesses in the part E', as clearly indicated in Fig. 20, said springs tendingtothrow the parts away from each other and hold their ends in contact with the iiangesor disks B2.

The extensions A5 are provided at their outerends with air-discharge pipes O, which permit air to escape therefrom when the plates move outwardly and also prevent the creation of a vacuum when the plates move inwardly. Thearrangement of the branch passages b9 b1@ with Vrespect to the air-passages permit the escape of water of condensation from the casing, as the outer ends thereof are located closer to the interior of the casing than the main passages b3 b4.

'The motor herein shown is especially7 applicable for use as a center-wheel or hub motor and may be readily applied to vehicle- Wheels in the construction of automobiles as Yvvell as to hubs of driving-pulleys for transmitting power. Itwill'be obvious, however,

that the operation of the said parts-to wit', the casing and the shaftfmay be reversed, the shaft being made to rotate while the casing remains stationary. In such construction the parts herein termed the cylinder IOO IIO

and which constitute the abutment would become the main rotary part or piston of the engine, While the plates D Would become the abutments against which the steam would act to drive the engine. Appropriate terms are therefore employed in designatingthe several operative parts of the 4motor which. do not limit the same to the particular construction herein, shown. vi It is obvious that many changes may be made in the details of construction without departing from the spirit of the invention, and I do not Wish to be limited to such details except as hereinafter made the subject of specic claims.

I claim as my invention- 1. A rotary motor comprising an exterior casing having a cylindric inner surface, an eccentric cylinder therein, said eccentric cylinder and casing having rotative movement one with respect Ito the other, and thecylinder being provided at its ends With circular disks or fianges formed at their margins to provide steam-tight joints with the cylindricinner surface of the casing, radially-sliding plates in the casing, shoes having oscillatory connection with the inner ends of said plates and bearing against the cylinder and lugs on the shoes adapted to engage circular grooves formed on the inner faces of said disks or flanges.

2. A rotary motor comprising an exteriorV casing having a cylindric inner surface, an eccentric cylinder therein, said eccentric cylinder and casing having rotative movement.

one with respect to the other, radially-sliding plates in the casing having parts engaging the eccentric surface of the cylinder, a radi-` ally-movable bearing-block occupying a longitudinal recess in the periphery of said cylinder and bearing atits outer face against the cylindric interior surface of the casing, said bearing-block being provided .Withvprojecting parts which enter guide-grooves in the casing and said grooves having cam-surfaces Which are located to retract the block in its grooves when the plates pass thereover.v

the inner cylindric surface of the casing, and

means for retracting said block into its recess to permit the inner ends of the plates to pass thereover.

4. Arotary motor colnprising an exterior casing having a clyindric interior surface, an

eccentric cylinder therein, said eccentric cylinder and casing havingrotative movement one with respect to the other, radially-sliding plates mounted in the casing and having parts engaging the surface of the eccentric cylinder, supply and exhaust passages-leading through said eccentric cylinder and opening into the interior of the casing,a radially-,movablebearing-block occupying a longitudinal recess in the periphery of the cylinder, andprojecting parts at the ends of said bearing member engaging curved guide-grooves in the casing.

5. A rotary motor comprising anV exterior casing having a cylindric interior surface, an eccentric cylinder therein, said eccentric cylinder and casing having rotative movement one with respect to the other, circulardisks or flanges at the ends of the'cylinders formed at their margins toprovide steam-tight joints with the interior cylindric surface of,k the casing, radially-sliding plates mountedin the casing andhaving parts engaging the surface of the eccentric cylinder, supply and exhaust passages leading throughA said eccentric cylinder and openinginto the interior of the casing, interlocking connections between said sliding `plates and said disks or anges acting to hold the plates in their proper relation with respect to the cylinder and avbearing-block occupying a longitudinal recess in said cylinder and bearing against the cylindric interior surface of the casing, said. bearing-block being provided with extensions which pass through openings in the disks or iianges and engage curved guide-grooves in the casing, and said grooves being provided with cam portions `which Vact to withdraw the bearing-block into its recess to permit the plates to pass over the same. -f

6.' A rotary motor comprising an exterior casing having an interior cylind ric surface, an eccentric cylinder therein, said cylinder and casing having rotative movement one with respect to the other,radially-sliding plates inthe casing, shoes pivotally connected with the inner ends of said plates and engagingthe surface of the eccentric cylinder, disks or flanges at the ends of said cylinder having 4interlocking guiding engagement With the ends of said shoes, one of said disks or flanges being-provided with a removablepart, the'removal of which permits said shoes to be inserted into or removed fromthe casing. Y

7. A rotary motor comprising an exterior casing having an interior cylindric surface, an eccentric cylinder therein, said cylinder and casing having rotative movement one with respect to the other, radiallysliding plates mounted in said casing, shoes pivotally connected with the inner ends of said plates and engaging the surface of the eccentric cylinder, disks or flanges at the ends of said cylinder provided With curved guide-grooves which are engaged by lugs projecting from the-ends of said shoes, one of said disks or flanges being provided with an opening covered by a plate, said opening being located to permit the removal of said shoes or insertion thereof in the casing, and said plate containing part:l

IOC)

VIIo

of the guide-groove of said disk or flange engaged by the lugs of the shoes. f

8. A rotarymotor comprising an exterior casing having a cylindric interior surface, an eccentric cylinder therein, said cylinder and casing having rotative movement one with respect to the other and the cylinder being provided at its ends with annular disks or flanges which are formed to provide at their margins steam-tight joints with the cylindric inner surface of the casing, removable heads for said casing located outside of said disks and innerand outer split packing-rings interposed between said heads and disks, the slits in the packing-rings being staggered with relation to each other, and saidl packing-rings being provided with inclined margins which engage conical recesses or seats in the head formed to receive the same.

9. A rotary motor comprising an exterior casing having a cylindric interior surface, an eccentric cylinder therein, said cylinder and casing having rotative movement one with respect to the other and the cylinder being provided at its ends with annular disks or ilanges which are formed to provide at their margins steam-tight joints with the cylindric inner surface of the casing, removable heads for said casing located outside of said disks, and inner and outerringsinterposed between said heads and disks, the slits in said rings being staggered with respect to each other, said packing-rings being provided with inclined margins which engage conical recesses or seats in the head formed to receive the same, and springs interposed between said disks and said rings to hold the rings against their conical seats.

10. A rotary motor comprising an exterior casing having a cylindric interior surface, an eccentric cylinder therein, said cylinder and casing having rotative movement one with respect to the other, radially sliding plates mounted in the casing and having parts engaging the surface of the eccentric cylinder, supply and exhaust passages leading through said eccentric cylinder and opening into the interior of the casing, said sliding plates comprising two laterally-separable parts provided at their meeting edges, one with a tongue and the other with a groove to receive the tongue, said tongue member being provided with enlargements, the outer ends of which enter notches in the grooved member, and springs in said notches which bear outwardly against said enlargements on the tongue member.

ll. A rotary motor comprising an eccentrically-disposed cylinder, concentrically-disposed flanges at the opposite ends of said cylinder, a casing inclosing the space around the cylinder and between the flanges and radially-movable plates having at their inner ends parts engaging the outer surface of said cylinder and having also interlocking guiding engagement with said flanges.

l2. A rotary motor comprising an eccentrically-disposed cylinder, concentrically-disposed flanges at the opposite ends of said cylinder, a casing inclosing the space around said cylinder and between the anges radially-movable plates having at their inner ends parts engaging the outer surface of said cylinder, a radially-movable bearing-block occupying a longitudinal groove in said cylinder and bearing against the inner cylindric surface of said casing and means for retracting said block into its recess to permit the plates to pass thereover.

13. `A rotary motor comprising an axle or spindle having thereon two concentricallydisposed flanges, an eccentrically-disposed cylinder between said flanges, a casing, comprising an annular part, inclosing the space around the cylinder between said flanges and having slots or openings therethrough, hollow capsor extensions secured to said annular part or casing over said slots, heads secured to said casing and engaging said axle outside of said anges, plates radially movable in said slots and hollow caps and having parts bearing'against said cylinder, and transverse packing-strips occupying grooves in said extensions and bearing yieldingly against the faces of said plates.

In testimony that I claim the foregoing as my invention I aftix my signature, in presence of two witnesses, this 19th day of June, A. D. 1901.

BASIL V. SZAB.

lVitnesses:

WILLIAM L. HALL, *Y GERTRUDE BRYCE. 

